BG 2.68
तस्माद्यस्य महाबाहो निगृहीतानि सर्वशः। इन्द्रियाणीन्द्रियार्थेभ्यस्तस्य प्रज्ञा प्रतिष्ठिता
tasmād yasya mahā-bāho nigṛihītāni sarvaśhaḥ indriyāṇīndriyārthebhyas tasya prajñā pratiṣhṭhitā
Therefore, O Mighty-Armed One, he whose senses are detached from their objects—take it that his reason is purified.
Translated by Shri Purohit Swami
Therefore, O mighty-armed Arjuna, his knowledge is steady whose senses are completely restrained from sense objects.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
tasmāt—therefore; yasya—whose; mahā-bāho—mighty-armed one; nigṛihītāni—restrained; sarvaśhaḥ—completely; indriyāṇi—senses; indriya-arthebhyaḥ—from sense objects; tasya—of that person; prajñā—transcendental knowledge; pratiṣhṭhitā—remains fixed